3G2 to AU Audio conversion is the process of extracting or transcoding the audio track from a 3G2 multimedia file into the AU audio container format. This converts audio streams (commonly AAC or AMR inside 3G2) into an AU file, producing a simple headered audio file suitable for legacy audio players, telephony, and certain Unix-based systems.
Related guides
Practical guides to help you choose formats, preserve quality, and avoid common conversion problems.
FLAC and MP3 solve different audio problems. FLAC preserves every sample for archiving, editing, and serious listening, while MP3 creates compact files for phones, cars, streaming libraries, and quick sharing. This guide explains how FLAC to MP3 conversion works, which bitrate settings are most transparent, how to protect tags and album art, and when you should avoid converting at all.
Read guide →Learn how to convert WAV to MP3 with optimal quality settings. This guide covers bitrate selection, CBR vs VBR encoding, step-by-step conversion methods using online tools, Audacity, and FFmpeg, plus expert advice on preserving audio fidelity during compression.
Read guide →A comprehensive comparison of MP3, FLAC, AAC, WAV, and OGG audio formats. Learn which codec delivers the best quality, compatibility, and file size for music, podcasts, and archiving.
Read guide →Drag your .3G2 file from your computer or use the browse function.
Confirm .au as the selected destination format.
Click "Convert" and download your converted .AU file once ready.
The 3G2 format uses MIME type video/3gpp2 and often contains MPEG-4 or H.263 video codecs with AAC or EVRC audio codecs. AU files have the MIME type audio/basic and usually contain uncompressed audio data or μ-law encoded audio, making them compatible with classic audio software environments.
The AU Audio (.AU) format is commonly used for audio. Understanding its characteristics can be helpful when converting to or from other formats like 3G2.
While specific technical details aren't available here, AU Audio files generally serve the purpose of storing audio effectively within their domain.
Our Online 3G2 to AU Converter allows you to transform 3G2 video files into AU audio format effortlessly. Whether you need to extract audio or convert for compatibility, this tool provides a fast and user-friendly solution without software installation.
3G2 is a multimedia container format that typically stores video and audio optimized for mobile devices, while AU is a simple audio file format primarily used in Unix systems. Converting 3G2 to AU extracts the audio component, making it suitable for audio-only applications and legacy systems that support AU format.
For best quality, preserve the original sample rate when converting (e.g., 44.1 kHz -> 44.1 kHz) to avoid resampling artifacts.
Keep individual 3G2 files under ~100–250 MB for faster uploads and reliable browser-based conversion; large files may take longer or require a desktop tool.
If the 3G2 uses compressed audio (AAC/AMR), expect lossy re-encoding when creating AU PCM; choose a higher bitrate or 16-bit PCM to minimize perceived quality loss.
Use batch conversion only if the tool supports it; ensure consistent sample rate/bit depth across files to simplify post-processing.
This 3G2 to AU converter saved me hours of work.
John M.
Audio Engineer
Quick and reliable conversion, exactly what I needed!
Lisa K.
Content Creator
Simple interface and excellent output quality for AU files.
Mark D.
Tech Enthusiast
Start your free 3G2 to AU conversion now.
Drag your file here to to upload.
Up to 250MB
AU is a legacy container primarily for PCM audio; it does not support embedded video or advanced metadata, so video content is discarded during conversion.